Development process of muzzle flows including a gun-launched missile

作     者：Zhuo Changfei Feng Feng Wu Xiaosong 

作者机构：School of Mechanical Engineering Nanjing University of Science and Technology 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2015年第28卷第2期

页      面：385-386页

核心收录：

学科分类：082601[工学-武器系统与运用工程] 08[工学] 082501[工学-飞行器设计] 0826[工学-兵器科学与技术] 082602[工学-兵器发射理论与技术] 0825[工学-航空宇航科学与技术] 

基　　金：financially supported by the National Natural Science Foundation of China (No. 11402119) the National Defence Pre-research Foundation of China (No. 404040302) 

主　　题：Blast flow field Chemical reaction Computational fluiddynamics Dynamic overlapped grids Gun-launched missile Muzzle flows 

摘      要：Numerical investigations on the launch process of a gun-launched missile from the muz- zle of a cannon to the free-flight stage have been performed in this paper. The dynamic overlapped grids approach are applied to dealing with the problems of a moving gun-launched missile. The high-resolution upwind scheme （AUSMPW ＋） and the detailed reaction kinetics model are adopted to solve the chemical non-equilibrium Euler equations for dynamic grids. The development process and flow field structure of muzzle flows including a gun-launched missile are discussed in detail. This present numerical study confirms that complicated transient phenomena exist in the shortly launching stages when the gun-launched missile moves from the muzzle of a cannon to the free- flight stage. The propellant gas flows, the initial environmental ambient air flows and the moving missile mutually couple and interact. A complete structure of flow field is formed at the launching stages, including the blast wave, base shock, reflected shock, incident shock, shear layer, primary vortex ring and triple point.